CN111588066A - Double-backheating combined cycle heat pump drying system - Google Patents

Double-backheating combined cycle heat pump drying system Download PDF

Info

Publication number
CN111588066A
CN111588066A CN202010609628.7A CN202010609628A CN111588066A CN 111588066 A CN111588066 A CN 111588066A CN 202010609628 A CN202010609628 A CN 202010609628A CN 111588066 A CN111588066 A CN 111588066A
Authority
CN
China
Prior art keywords
air
heat
condenser
heat insulation
drying system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010609628.7A
Other languages
Chinese (zh)
Inventor
夏海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Yiming Machinery Technology Co ltd
Original Assignee
Guangdong Yiming Machinery Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Yiming Machinery Technology Co ltd filed Critical Guangdong Yiming Machinery Technology Co ltd
Priority to CN202010609628.7A priority Critical patent/CN111588066A/en
Publication of CN111588066A publication Critical patent/CN111588066A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B1/00—Preparation of tobacco on the plantation
    • A24B1/02—Arrangements in barns for preparatory treatment of the tobacco, e.g. with devices for drying
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/10—Roasting or cooling tobacco
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/08—Buildings or groups of buildings for agricultural purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Abstract

The invention provides a drying system of a double-backheating combined cycle heat pump. The double-backheating combined circulating heat pump drying system comprises an adjustable air valve, a compressor, a plate type heat exchanger, a fresh air supplementing opening, a high-humidity air outlet, an auxiliary condenser, an air pipe, a solar heat collector, a condenser, a baking room wall, a fan, an air mixing chamber, a plate type heat exchanger, an evaporator, a heat insulation plate group, a through hole and a connecting bolt. The double-backheating and circulating heat pump drying system provided by the invention has the advantages of effectively reducing the energy consumption of the heat pump drying process and improving the drying quality.

Description

Double-backheating combined cycle heat pump drying system
Technical Field
The invention relates to the technical field of tobacco leaf baking processes, in particular to a double-backheating combined cycle heat pump drying system.
Background
The heat pump drying system is commonly used in the current tobacco leaf baking process, the existing heat pump drying system adopts open cycle, the mode is suitable for large moisture discharge amount, the fresh air is continuously introduced for replacement and moisture discharge, the drying speed is high, but moisture is not easily discharged at the final drying stage, and because the air of the environment is adopted, the relative humidity of the air is high at the moment, the temperature is required to be raised for moisture removal, and therefore the energy consumption is increased. And closed circulation can effectively reduce circulating air's humidity through indoor evaporator, satisfies dry later stage demand, nevertheless hardly discharges big moisture capacity at the initial stage, probably influences product drying quality.
Referring to the attached fig. 3-7 of the specification, a heat pump is a device for transferring heat energy of a low-temperature heat source to a high-temperature heat source, and a system of the heat pump is composed of a compressor, a condenser, an evaporator, a throttle valve and the like. The circulation process of the refrigerant working medium comprises the following steps: a low-temperature low-pressure saturated gaseous refrigerant (state point 1) enters a compressor, is compressed into high-temperature high-pressure superheated gas (state point 2) in the compressor, enters a condenser, exchanges heat with ambient low-temperature air in the condenser to become high-pressure medium-temperature saturated liquid (state point 3), enters a throttle valve, becomes a mixture of low-temperature low-pressure saturated gas and saturated liquid (state point 4) after passing through the throttle valve, enters an evaporator, absorbs heat of the ambient air of the evaporator to become low-pressure low-temperature saturated gas (state point 1), and then enters the compressor to start circulation, so that continuous working heating is realized; the drying system is composed of a drying chamber, a condenser, an evaporator, a fan and an air supply channel, wherein 1 point is an air supply state point of air after being heated by a heat pump condenser, high-temperature low-humidity air is sent into the drying chamber through an inner fan to dry and dehumidify materials, the process is an isenthalpic heat insulation humidifying process, the air sent into the drying chamber takes away moisture in the materials to become a state point 2, namely the state of air at the outlet of the drying chamber, 2 points to 3 points are the state change of return air at the outlet of the drying chamber through the evaporator, firstly, the air at the 2 points exchanges heat with the air after temperature reduction and dehumidification, the air after being cooled to the state point 3 and the air at the 3 points is cooled and dehumidified to the state point 4 through the evaporator, condensate water is continuously separated out in the process, namely, the moisture in the materials is changed into the condensate water through a series of circulation to. The 4 points of air after cooling and dehumidification is heated by a condenser and sent into a drying chamber to complete one cycle.
The prior art adopts either closed circulation or open circulation, and for tobacco leaf baking, the efficiency is higher only in certain stages, and the efficiency is not high in some stages, because the tobacco leaf baking is basically a baking process with three, five stages. A cyclic scheme is therefore difficult to be an efficient scheme throughout the baking stage.
In order to utilize the advantages of the open cycle and the closed cycle in different stages to the maximum extent, the double-backheating equipment is adopted to improve the thermal performance of the system, and is combined on the basis to meet the requirements of the heat load and the humidity load change of different stages of baking, so that the maximum energy efficiency and the humidity accurate matching are realized. Further, the solar energy can be combined to improve the system performance.
Therefore, the method combines the open cycle and the closed cycle aiming at the characteristic that the open cycle and the closed cycle are both suitable for certain stages of the flue-cured tobacco drying process and the coupling of certain stages is not good. The combined circulation mode of the heat pump drying system is provided, the circulation mode is determined according to a tobacco curing process, and the heat pump drying system is assisted by solar energy, so that the energy consumption of the heat pump drying process can be effectively reduced, and the drying quality is improved. The solar energy of the device is in an optional mode and is selected or chosen according to application requirements.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the invention provides a double-backheating combined cycle heat pump drying system which can effectively reduce the energy consumption in the heat pump drying process and improve the drying quality.
The invention provides a drying system of a double-backheating combined cycle heat pump, which comprises: the curing barn comprises an adjustable air valve, a compressor, a plate type heat exchanger, a fresh air supplementing opening, a high-humidity air exhaust opening, an auxiliary condenser, an air pipe, a solar heat collector, a condenser, a curing barn wall, a fan, an air mixing chamber, a plate type heat exchanger and an evaporator, wherein the curing barn wall forms a whole curing barn frame, the air mixing chamber is arranged inside the curing barn, the fresh air supplementing opening and the high-humidity air exhaust opening are arranged on the curing barn, the plate type heat exchanger is arranged at the fresh air supplementing opening, the solar heat collector is arranged at the upper end of the curing barn, the condenser, the fan, the plate type heat exchanger and the evaporator are all arranged inside the curing barn, the adjustable air valves are all arranged in the curing barn, the compressor and the auxiliary condenser, the compressor and the evaporator, the auxiliary condenser and the auxiliary condenser, the auxiliary condenser and the evaporator, the auxiliary condenser and the condenser, the condenser and the evaporator are, the interior of the curing barn is provided with a drying chamber and an air return opening.
Preferably, the side wall of the curing barn, which is located outside the curing barn, is provided with the heat preservation plate group and the heat insulation plate group, the heat preservation plate group is located between the wall of the curing barn and the heat insulation plate group, and the heat insulation plate group is provided with the fixing mechanism which is arranged in a matched manner.
Preferably, the fixing mechanism comprises through holes and connecting bolts, the two groups of through holes are respectively formed in the heat insulation plate group and the heat insulation plate group, and the two groups of connecting bolts respectively penetrate through the two groups of through holes to be in threaded connection with the wall body of the curing barn.
Preferably, the heat insulation plate group and the heat insulation plate group are respectively composed of a plurality of heat insulation plates and a plurality of heat insulation plates, and the heat insulation plates are welded with the heat insulation plates and the heat insulation plates.
Preferably, dust covers are mounted at two ends of the fresh air supplementing opening and the high-humidity air exhaust opening.
Compared with the related art, the drying system of the double-backheating combined cycle heat pump provided by the invention has the following beneficial effects:
1. the invention realizes the combination of open cycle and closed cycle, couples with the load and humidity change of different stages in the tobacco curing process, realizes the optimal thermal performance and moisture removal matching of each stage, realizes energy saving and improves the drying quality; the double heat regenerators are adopted to recover heat energy to the maximum extent, improve the heat efficiency of the system and realize energy conservation and consumption reduction; solar energy can be selected and properly selected according to requirements. Under optional conditions, the air-conditioning system is mainly used for heating the air flow at the outlet of the evaporator, and the heated air outlet does not exceed the temperature so as to ensure higher solar thermal efficiency;
2. the heat preservation plate group and the heat insulation plate group are arranged on the side wall of the baking room outside the baking room, so that heat preservation and heat insulation are carried out inside the baking room, the loss of heat inside the baking room is reduced, the external temperature of the baking room is reduced, and the discomfort caused by the contact of a worker with a high-temperature heat source is reduced;
3. through the dust cover of the both ends installation at new trend mend wind gap and highly humid air exit, prevent that outside dust from the new trend mend wind gap and get into inside the roast room or some inside impurity of roast room from highly humid air exit discharge outside the roast room and the polluted environment.
Drawings
FIG. 1 is a structural diagram of a heat pump drying system in a double-backheating combined cycle mode according to the present invention;
FIG. 2 is a flow chart of a heat pump drying system with solar energy by combining double backheating and circulating;
FIG. 3 is a schematic diagram of a conventional heat pump drying apparatus;
FIG. 4 is a diagram showing the state change of a dry working medium of a conventional heat pump;
FIG. 5 is a diagram of the change of the state of the circulating air of the drying medium of the prior heat pump;
FIG. 6 is a schematic diagram of a conventional closed heat pump drying apparatus;
FIG. 7 is a schematic diagram of an open heat pump drying apparatus;
FIG. 8 is a schematic view showing the structure of a part of the wall of the baking room of the present invention.
Reference numbers in the figures: 1. an adjustable air valve; 2. a compressor; 3. a plate heat exchanger I; 4. a fresh air supplementing opening; 5. a high-humidity air exhaust outlet; 6. a secondary condenser; 7. an air duct; 8. a solar heat collector; 9. a condenser; 10. baking house wall; 11. a fan; 12. an air mixing chamber; 13. a plate heat exchanger II; 14. an evaporator; 15. a heat insulation plate group; 16. a heat insulation plate group; 17. a through hole; 18. and connecting the bolts.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8 in combination, wherein fig. 1 is a structural diagram of a drying system of a heat pump in a double regenerative combined cycle mode according to the present invention; FIG. 2 is a flow chart of a heat pump drying system with solar energy by combining double backheating and circulating; FIG. 3 is a schematic diagram of a conventional heat pump drying apparatus; FIG. 4 is a diagram showing the state change of a dry working medium of a conventional heat pump; FIG. 5 is a diagram of the change of the state of the circulating air of the drying medium of the prior heat pump; FIG. 6 is a schematic diagram of a conventional closed heat pump drying apparatus; FIG. 7 is a schematic diagram of an open heat pump drying apparatus; FIG. 8 is a schematic view showing the structure of a part of the wall of the baking room of the present invention. The double backheating combines the circulation heat pump drying system to include: the system comprises an adjustable air valve 1, a compressor 2, a plate type heat exchanger I3, a fresh air supplementing opening 4, a high-humidity air exhaust opening 5, an auxiliary condenser 6, an air pipe 7, a solar heat collector 8, a condenser 9, a baking room wall 10, a fan 11, an air mixing chamber 12, a plate type heat exchanger II 13, an evaporator 14, a heat preservation plate group 15, a heat insulation plate group 16, a through hole 17 and a connecting bolt 18.
In the specific implementation process, as shown in fig. 1 and 2, the baking room comprises an adjustable air valve 1, a compressor 2, a plate heat exchanger (first 3), a fresh air supplementing opening 4, a high-humidity air exhaust opening 5, an auxiliary condenser 6, an air pipe 7, a solar heat collector 8, a condenser 9, a baking room wall 10, a fan 11, an air mixing chamber 12, a plate heat exchanger (second 13) and an evaporator 14, wherein the baking room wall 10 forms a whole baking room frame, the air mixing chamber 12 is arranged inside the baking room, the fresh air supplementing opening 4 and the high-humidity air exhaust opening 5 are arranged on the baking room, the plate heat exchanger (first 3) is arranged at the fresh air supplementing opening 4, the solar heat collector 8 is arranged at the upper end of the baking room, the condenser 9, the fan 11, the plate heat exchanger (second 13) and the evaporator 14 are all arranged inside the baking room, a plurality of adjustable air valves 1 are all arranged in the baking room, and the compressor 2, the auxiliary, The compressor 2 and the evaporator 14, the auxiliary condenser 6 and the condenser 9, the auxiliary condenser 6 and the evaporator 14, the condenser 9 and the evaporator 14 are all communicated through an air pipe 7, and a drying chamber and an air return opening are arranged in the baking room;
it should be noted that: aiming at the tobacco leaf baking process, a combined circulation mode is formed by selecting parts with good coupling of an open circulation system and a closed circulation system and the tobacco leaf baking process, the heat pump drying system is divided into three working conditions, and different circulation modes are combined to operate, so that the tobacco leaf quality is effectively improved, and the drying energy consumption is reduced. The solar energy of the invention is an optional mode.
Combining a cycle mode one: open big moisture removal mode, the volume of dehumidifying is great in the yellow earlier stage drying chamber, and the system switches into big moisture removal mode of operation, and the system is open, and the air door is opened to B point this moment. The air in the drying chamber absorbs the moisture in the materials to become high-humidity air, and the high-humidity air passes through an air return opening at the bottom of the drying chamber and then is divided into two paths. The air flow is adjusted by using the adjustable air valve 1, so that about 40% of wet air exchanges heat with the dehumidified air through the plate heat exchanger II 13, enters the evaporator 14 for cooling and dehumidification after precooling, then returns to the plate heat exchanger II 13 for exchanging heat with the high-humidity air, and directly enters the air mixing chamber 12 or the solar heat collector 8 after preheating. When the solar energy is sufficient, the air door is opened to the point D, and the dehumidified air enters the solar air heat collector 8 to be further heated and then enters the air mixing chamber 12. When solar energy is insufficient, the damper is opened to point C and the dehumidified air is directed into the air mixing chamber 12. The rest 60% of the air is discharged outside after passing through the plate heat exchanger (3), and meanwhile, the introduced fresh air is heated, and enters the air mixing chamber (12) after being preheated in the plate heat exchanger (3). The two parts of air are mixed in the air mixing chamber 12, sent to the condenser 9 by the fan 11 to be heated and further heated, and then enter the drying chamber again to dry the materials, thus completing a cycle.
And combining a circulation mode II: and in the closed stable drying mode, the color fixing stage is the stage with the longest time for baking the tobacco leaves, so that a stable system operation mode is needed to keep the temperature and the humidity of the air in the drying chamber. The system is switched to a stable drying mode, the system is closed, and the air doors are opened to the point A and the point D respectively at the moment. The air in the drying chamber absorbs the moisture in the materials to become medium-humidity air, and the medium-humidity air is divided into two paths after passing through an air return inlet at the bottom of the drying chamber. The air flow is adjusted by using the adjustable air valve 1, so that about 40% of wet air exchanges heat with the dehumidified air through the plate heat exchanger II 13, enters the evaporator 14 for cooling and dehumidification after precooling, then returns to the plate heat exchanger II 13 for exchanging heat with the air with medium humidity, enters the solar air heat collector 8 for further heating after preheating, and then enters the air mixing chamber 12. The remaining approximately 60% of the air enters the air mixing chamber 12 directly. The two parts of air are mixed in the air mixing chamber 12, then sent to the condenser 9 by the fan 11 to be heated and heated, and then enter the drying chamber again to dry the materials, thus completing a cycle.
Combining a circulation mode III: in the closed heating and drying mode, the circulating medium air needs to be heated rapidly in the dry rib period, and can be discharged outdoors in time when the drying heat load is redundant, and the circulating air volume is small in the stage and can be completely sent to the evaporator 14 for dehumidification. The system is switched to a heating and drying mode, the system is closed, and the air door is opened to the point A at the moment. The air in the drying chamber absorbs the moisture in the materials to become medium-humidity air (relatively speaking, in the dry period, the moisture in the materials is low), the air passes through an air return opening at the bottom of the drying chamber and then enters the plate heat exchanger II 13 to exchange heat with the dehumidified air, the air after precooling enters the evaporator 14 to be cooled and dehumidified, and then the air returns to the plate heat exchanger II 13 to exchange heat with the medium-humidity air. When the solar energy is sufficient, the air door is opened to the point D, and the dehumidified air enters the solar air heat collector 8 to be further heated and then enters the air mixing chamber 12. When solar energy is insufficient, the damper is opened to point C and the dehumidified air is directed into the air mixing chamber 12. After being mixed in the air mixing chamber 12, the air is sent to the condenser 9 by the fan to be heated and heated, and then enters the drying chamber again to dry the materials, thus completing a cycle. When the drying heat load is excessive, the heat is discharged to the outside through the sub-condenser 6 to reduce the heat load of the drying chamber, and the heat load is balanced.
The invention realizes the combination of open cycle and closed cycle, couples with the load and humidity change of different stages in the tobacco curing process, realizes the optimal thermal performance and moisture removal matching of each stage, realizes energy saving and improves the drying quality; the double heat regenerators are adopted to recover heat energy to the maximum extent, improve the heat efficiency of the system and realize energy conservation and consumption reduction; solar energy can be selected and properly selected according to requirements. In an optional case, the air heating device is mainly used for heating air flow at the outlet of the evaporator 14, and the heated air outlet does not exceed 50 ℃ so as to ensure higher solar thermal efficiency.
In a specific implementation process, as shown in fig. 8, a heat insulation plate group 15 and a heat insulation plate group 16 are installed on a side wall of a baking room wall 10 outside a baking room, the heat insulation plate group 15 is located between the baking room wall 10 and the heat insulation plate group 16, and the heat insulation plate group 16 is provided with a fixing mechanism which is arranged in a matching manner;
it should be noted that: through the installation insulation board group 15 and the insulation board group 16 of the baking house wall 10 lateral wall that lies in outside the baking house, keep warm and insulate against heat to baking house inside, reduce the inside thermal loss of baking house, reduce the outside temperature of baking house simultaneously, reduce the uncomfortable sense when the staff of sharing touches high temperature heat source.
In a specific implementation process, as shown in fig. 8, the fixing mechanism includes through holes 17 and connecting bolts 18, two groups of through holes 17 are respectively formed in the heat insulation plate group 15 and the heat insulation plate group 16, and two groups of connecting bolts 18 respectively penetrate through the two groups of through holes 17 to be in threaded connection with the baking room wall 10;
it should be noted that: through holes are formed in the heat preservation plate group 15 and the heat insulation plate group 16, and the heat preservation plate group 15 and the heat insulation plate group 16 are fixed on the baking room wall 10 at one time through the connecting bolts 18, so that the installation steps are simplified, and the installation is convenient.
In a specific implementation process, as shown in fig. 8, the heat insulation plate group 15 and the heat insulation plate group 16 are respectively composed of a plurality of heat insulation plates and a plurality of heat insulation plates, and the heat insulation plates are welded with the heat insulation plates;
it should be noted that: through welding heated board and heated board, insulation board and insulation board between, reduce the gap that exists between heated board and the heated board, insulation board and the insulation board, improved roast holistic intensity of room simultaneously, improve its life.
Wherein, dust covers are arranged at the two ends of the fresh air supplementing opening 4 and the high-humidity air exhaust opening 5;
it should be noted that: through installing the dust cover at the both ends of new trend mend wind gap 4 and highly humid air exhaust opening 5, prevent that outside dust from getting into roast room inside from new trend mend wind gap 4 or some inside impurity of roast room from highly humid air exhaust opening 5 department discharge outside the roast room and the polluted environment.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. A double backheating combines circulation heat pump drying system which characterized in that includes:
the curing barn comprises an adjustable air valve (1), a compressor (2), a plate heat exchanger (3), a fresh air supplementing opening (4), a high-humidity air exhaust opening (5), an auxiliary condenser (6), an air pipe (7), a solar heat collector (8), a condenser (9), a curing barn wall body (10), a fan (11), an air mixing chamber (12), a plate heat exchanger (13) and an evaporator (14), wherein the curing barn wall body (10) forms a whole curing barn framework, the air mixing chamber (12) is arranged in the curing barn, the fresh air supplementing opening (4) and the high-humidity air exhaust opening (5) are arranged on the curing barn, the plate heat exchanger (3) is arranged at the fresh air supplementing opening (4), the solar heat collector (8) is arranged at the upper end of the curing barn, and the condenser (9), the fan (11), the plate heat exchanger (13) and the evaporator (14) are all arranged in the curing barn, a plurality of adjustable blast gates (1) are all installed in roast room, compressor (2) and vice condenser (6), compressor (2) and condenser (9), compressor (2) and evaporimeter (14), vice condenser (6) and condenser (9), vice condenser (6) and evaporimeter (14), condenser (9) and evaporimeter (14) all communicate through tuber pipe (7), roast room is inside to be equipped with the drying chamber and to be equipped with the return air inlet.
2. The drying system of claim 1, wherein the heat preservation plate group (15) and the heat insulation plate group (16) are mounted on the side wall of the baking room wall (10) outside the baking room, the heat preservation plate group (15) is located between the baking room wall (10) and the heat insulation plate group (16), and the heat insulation plate group (16) is mounted with a fixing mechanism which is cooperatively arranged.
3. The drying system of claim 2, wherein the fixing mechanism comprises through holes (17) and connecting bolts (18), two sets of through holes (17) are respectively formed in the insulation plate set (15) and the heat insulation plate set (16), and two sets of connecting bolts (18) respectively penetrate through the two sets of through holes (17) to be in threaded connection with the baking room wall (10).
4. The drying system of the double-regenerative combined cycle heat pump according to claim 2, wherein the heat insulation plate group (15) and the heat insulation plate group (16) are respectively composed of a plurality of heat insulation plates and a plurality of heat insulation plates, and the heat insulation plates are welded with the heat insulation plates.
5. The drying system of claim 1, wherein dust covers are installed at both ends of the fresh air supply opening (4) and the high-humidity air exhaust opening (5).
CN202010609628.7A 2020-06-29 2020-06-29 Double-backheating combined cycle heat pump drying system Pending CN111588066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010609628.7A CN111588066A (en) 2020-06-29 2020-06-29 Double-backheating combined cycle heat pump drying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010609628.7A CN111588066A (en) 2020-06-29 2020-06-29 Double-backheating combined cycle heat pump drying system

Publications (1)

Publication Number Publication Date
CN111588066A true CN111588066A (en) 2020-08-28

Family

ID=72181119

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010609628.7A Pending CN111588066A (en) 2020-06-29 2020-06-29 Double-backheating combined cycle heat pump drying system

Country Status (1)

Country Link
CN (1) CN111588066A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113475733A (en) * 2021-06-23 2021-10-08 青岛海尔空调电子有限公司 Method and device for drying tobacco and drying equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113475733A (en) * 2021-06-23 2021-10-08 青岛海尔空调电子有限公司 Method and device for drying tobacco and drying equipment

Similar Documents

Publication Publication Date Title
CN205878363U (en) Heat recovery cooling dehumidification type fresh air processing unit that adjusts temperature
CN102425828B (en) Energy saving device suitable for accurate control air conditioner in machine room
CN103322656A (en) Heat recycling air conditioner set
CN111588065A (en) Solar heat pump drying system with open-close type circulation
CN105571017A (en) Fresh air processing unit
CN101294755A (en) Air-conditioning unit with constant temperature and humidity
CN206387002U (en) A kind of binary channels Separated type high-efficiency dehumidification fresh air
CN109737636B (en) Heat pump system, control method and heat pump drying device
CN105737302A (en) Central air-conditioning based on dry air energy
CN210070102U (en) Ground pipe laying water source dehumidification humidification fresh air unit
CN108224628A (en) With reference to heat pump driven standpipe indirect evaporating-cooling and the air-conditioner set of solution dehumidification
KR100430278B1 (en) Air Conditioner Applying Heatpipes
CN111588066A (en) Double-backheating combined cycle heat pump drying system
WO2020238793A1 (en) Condensing reheating constant-temperature constant-humidity system, and control method therefor
CN205980700U (en) Responsibility is dodged all to heat of high -efficient heat recovery
CN212488422U (en) Double-backheating combined cycle heat pump drying system
CN212488421U (en) Solar heat pump drying system with open-close type circulation
CN214468973U (en) All-air integrated air conditioner
CN213273672U (en) Multifunctional heat pump dehumidification drying system
CN110440355B (en) Hydropower station temperature-regulating dehumidifying air-conditioning system and operation method thereof
CN113719911A (en) Energy-saving integrated air supply air conditioning unit with compact structure
CN212457663U (en) Heat pump drying device
CN207299324U (en) Reheating type heat pump recuperation of heat air-conditioner set
CN206669985U (en) Circulation recuperation of heat Fresh air handling units in a kind of
CN216844904U (en) Heat exchange fresh air machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination